GB1152303A - Cooling device for Variable Transformers - Google Patents

Cooling device for Variable Transformers

Info

Publication number
GB1152303A
GB1152303A GB367968A GB367968A GB1152303A GB 1152303 A GB1152303 A GB 1152303A GB 367968 A GB367968 A GB 367968A GB 367968 A GB367968 A GB 367968A GB 1152303 A GB1152303 A GB 1152303A
Authority
GB
United Kingdom
Prior art keywords
brush
disc
metal strip
brush holder
jan
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB367968A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1152303A publication Critical patent/GB1152303A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/06—Variable transformers or inductances not covered by group H01F21/00 with current collector gliding or rolling on or along winding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc Machiner (AREA)
  • Braking Arrangements (AREA)

Abstract

1,152,303. Transformers. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 24 Jan., 1968 [27 Jan., 1967], No. 3679/68. Heading H1T. The heat generated at the carbon brush 25 of a variable transformer is dissipated by means of a resilient metal strip 29, of high thermal conductivity, secured to the brush holder 23 and bearing against a fixed dish-shaped metal disc 11 of large surface area. The brush holder is itself held at the free end of a resilient arm 21 which is secured to a hub 19 clamped on rotatable shaft 17. Aperture 13 in the disc 11 forms one bearing for this shaft, and the disc may also constitute a slip-ring for electrical connection of the carbon brush to terminal 33 via the strip 29. The core 3 and winding 5 are, apart from the portion 27 of the winding over which the brush moves, embedded in a housing 7 of insulating material. The metal strip has a depression at 35 which prevents the brush holder contacting the windings should the brush become excessively worn. A spring 31 may help to keep the metal strip in contact with the disc.
GB367968A 1967-01-27 1968-01-24 Cooling device for Variable Transformers Expired GB1152303A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6701292A NL6701292A (en) 1967-01-27 1967-01-27

Publications (1)

Publication Number Publication Date
GB1152303A true GB1152303A (en) 1969-05-14

Family

ID=19799149

Family Applications (1)

Application Number Title Priority Date Filing Date
GB367968A Expired GB1152303A (en) 1967-01-27 1968-01-24 Cooling device for Variable Transformers

Country Status (4)

Country Link
DE (1) DE1980289U (en)
FR (1) FR1551827A (en)
GB (1) GB1152303A (en)
NL (1) NL6701292A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108335843A (en) * 2018-04-10 2018-07-27 周琼 A kind of power equipment anti-corrosion protection shell
CN108711498A (en) * 2017-08-17 2018-10-26 周瑞军 A kind of adjusting method of the flexible adjustable auto-transformer of damping of carbon brush body

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108711498A (en) * 2017-08-17 2018-10-26 周瑞军 A kind of adjusting method of the flexible adjustable auto-transformer of damping of carbon brush body
CN108335843A (en) * 2018-04-10 2018-07-27 周琼 A kind of power equipment anti-corrosion protection shell

Also Published As

Publication number Publication date
NL6701292A (en) 1968-07-29
DE1980289U (en) 1968-03-07
FR1551827A (en) 1968-12-27

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees